"Mneme" refers to the concept of memory in Greek mythology and has no direct synonyms. However, some related words that can be used in its place include "remembrance," "recall," "retention," "recollection," and "memorization." These words can all be used to describe the act or process of remembering something, although they do not carry the same mythological or historical connotations as "mneme." "Memory," "mind," and "thought" are also closely related words that could be used to discuss the concept of mneme. In summary, while there are no direct synonyms for "mneme," there are many related words that can be used to describe the process of remembering.